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Finding the Fourth Proportional to 372,008.40, 513,373.64 and 219,053.20

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Solution

The fourth proportional to 372,008.40, 513,373.64 and 219,053.20 is: 302,294.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,008.40 : 513,373.64 = 219,053.20 : x
  2. Step 2: Convert to fraction form
    372,008.40/513,373.64 = 219,053.20/x
  3. Step 3: Cross multiply
    372,008.40x = 513,373.64 × 219,053.20
  4. Step 4: Simplify right side
    372,008.40x = 112,456,138,637.65
  5. Step 5: Solve for x
    x = 112,456,138,637.65/372,008.40
  6. Step 6: Final answer
    x = 302,294.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.